JPS62254746A - Method and instrument for forming dental fixing artificial prosthesis - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention is fixed to two natural teeth. The present invention relates to a method for making a fixed dental prosthesis, namely a AFJ appliance (physiological prosthesis).

The present invention also includes: The present invention relates to an instrument for inserting a filling material or restoring material used in making such a prosthesis.

[Prior art] Shokeyonin [It is well known that prosthetics, whether fixed or non-fixed, are used to replace lost natural teeth. be. The reasons for installing dental prostheses are generally efficient
This is because there is a need to restore the L pronunciation, that is, the correct release of za (lJ4ff), and there are also purely aesthetic reasons.

[The invention will solve the problem 17! Point IB] In the original position, create and install a medical fixed prosthesis, i.e., a bridge with a denture of 1 and 2 and a member for fixing the 1st part to the natural tooth, and a dental prosthesis for tooth A. The technology used up until now was very complex, and it was a formative work! The examination took a lot of time, and for this reason, the JFI practitioner and the practitioner had to sit down many times.

One of the main objects of the present invention is therefore to provide a method which avoids the drawbacks inherent in the prior art and, above all, significantly shortens the treatment process.

Another object of the invention is to provide a mechanical device for carrying out the method described above.

When performing this method, as well as other dental procedures, such as filling the occlusal base, it is often observed that some of the filling material overflows from the recess of the tooth, disrupting its continuity with the tooth. It will be done. In such a case, finishing treatment is actually required, which is a practical drawback and also results in a loss of one hour.

Therefore, another object of the present invention is to provide a containment device that prevents the filler or restoring material necessary for fixing from flowing out during the filling process into the recess to be filled.

Yet another object of the present invention is to provide a containment device that is shaped so that it can be safely removed immediately after treatment, and that does not interfere with or impose restrictions on the patient's necessary intraoral procedures. be.

[Means for solving the problem] These 1-1 objectives and other objectives described in detail later are:
By inserting both ends of the metal member into the pedestals formed on the facing abutment teeth, and placing the filling material on the gums of the toothless area so as to be bonded to the metal member, artificial teeth from L to E can be created. The gold m that formed the base of and underwent such treatment! IPII
By taking out the wood and adding another filling material,
After at least roughly finishing the artificial tooth, the metal member is again inserted into the pedestal and substantially secured using a filling material, and the artificial tooth is finished at the installation site. This is achieved by a method of making a fixed dental prosthesis such as a bridge denture using pedestals formed on opposing abutment teeth.

In order to carry out the method of the present invention, it is necessary to use a metal member formed by a metal member which can be passed through the gap between two abutment teeth and whose ends can be inserted into a pedestal formed in advance in these abutment mounds. A substantially rigid mechanical instrument according to the present invention is used.

According to a preferred embodiment of the invention, the metal member acting as a precise bridge has a type 1 end fitted with mutually opposite concave surfaces as surfaces adjacent to the flac (natural teeth or dentures). We are prepared. Of these two type 1 ends, the outermost one forms the boundary of at least a portion of the pedestal formed on the abutment tooth, while the inner one forms the boundary of at least a portion of the pedestal formed on the abutment tooth. One part forms its side part (i.e., base surface), that is, it serves as its limit.

According to a particular advantage of the present invention, the metal member.

It is equipped with a screw mechanism in the center that allows the entire metal member to be fitted into the missing tooth where the denture will be formed.

[Example] Regarding the present invention, preferred embodiments (
This will become clearer from the detailed description below, which is a non-limiting example.

In the accompanying drawings, and particularly in FIGS. 1 and 2, the method and apparatus of the present invention for forming a fixed dental prosthesis are shown firstly in a natural position for supporting the great knee, i.e. 14
1 and la (see Figure 2) (limiting to as much deactivation as possible if necessary for treatment), then recesses 2 and 2 in the crown.
It is necessary to form a. Such recesses face each other in alignment and are such that the ends of the support, which is formed as a metal rod 3 (described in more detail later), are inserted into the insertion 111 until they are hidden in these recesses.

This metal rod 3 has a substantially straight flat portion 3a.
(which may be slightly arched according to the radius of curvature of the arch to which the prosthesis will be attached) are placed in the recesses 2, 2a and, once the procedure is completed, are filled with a conventional filling or restoring material (e.g. a composition). The main components are two flat end portions 3b that are fixed and covered. In this embodiment, the end flat portion 3b has a height that is quite different from the central flat portion 3a, and is a type 1 metal plate that is joined with the convex surfaces facing each other. A fan-shaped portion (4, 4a) is interposed and fixed between the end flat portion 3b and both ends of the linear rod. These bow-shaped metal sectors may be formed at different heights, these indicated by the numeral 4 lean against the abutment teeth l and la, while the back-to-back sectors 4a , fasten the filling material or restoration material (which makes up the artificial denture).

It is preferable to provide a columnar body 5 in the middle of the flat portion 3a, which forms a mechanism for creating a gap between the abutment tooth and the adjacent denture together with the former fan-shaped portion. The body intersects with a hole made in the flat part, and in the lower part a small dish, a curved edible bowl, a disk, the material of which is substantially deformable and suitable shape is applied. It has a slightly concave surface. This concave member 6 rests on the gums of the missing tooth and serves as a protective spacer from the gum tissue, as well as serving as a reference for the height of the denture below.

The flow of the procedure for creating the medical prosthesis according to the present invention using such an instrument can be summarized as follows: After forming opposing recesses t42 and 2a that are large enough to accommodate both ends aB3b of the divine object so that they cannot be seen, a small plate 6 is brought into contact with the toothless tM stem. A filler 1, for example a composition, is then introduced to fix the small Ill 6 in the central part of the rod as desired. After the filling material has hardened, take out the whole thing and add more filling material or restoring material to finish it into the desired shape.After reinserting both ends 3b into the recesses R2 and 2a, insert both ends 1. A conventional filling material 1, such as amalgam grass, is fixed to the crown of the abutment tooth, and the crown of the abutment tooth is finished by covering it with the same material or another material. After final positioning of the denture, adjust the crown surface of the ah.

A normal procedure is then performed to bring the denture and the opposing natural tooth crowns into correct occlusion by matching the surfaces of the crowns of the natural teeth of the opposing arch rows.

In fact, the method according to the invention is efficient from an anatomical and functional point of view, without the need for mold-making and manual work by a dental technician, as is commonly done in the past. It becomes possible to quickly create fixed prosthesis.

Further, according to the present invention, such a rod-shaped mechanical instrument is
Preferably, it consists of two mutually symmetrical or asymmetrical parts 7.7a with a threaded column 8.8a that engages in the center with a sleeve-like internal thread 9, in which case the screw A columnar member 8.8a with a mountain,
Female thread 9 means that part 7 can be removed by turning the female thread in both directions.
7.7a are threaded in opposite directions so that they can be moved closer or further away, and the adjustment fM# of one part 7.7a is made before covering with filler or restoration material. Made by.

That is, they can be expanded or narrowed. The hole lO formed in the female screw is for operating the female screw and for accommodating the columnar body 5 of the small plate 6.

Furthermore, in order to improve the adhesion of the rod to the filling material or restoring material, the rod itself and both ends 3b are provided with through holes 11-, etc., which can improve the adhesion, while the intermediate mold member 4a is provided with a large hole. It is preferable to provide protruding pins 12 of different sizes.The rod 3 may be replaced by two parallel columnar members, and the functionality and effectiveness of the device as a whole and the artificial fixed prosthesis described above are improved. It may be formed to have a different external shape and portion from the completely parallelepiped-shaped rod without impairing its functionality and effectiveness as a method for manufacturing.

FIG. 4 shows a simplified modification of the device shown in FIG. In this variant, the device consists of a perforated metal rod 3 formed with a central flat part 3a and two end parts 3b, each end having two holes supporting the Tachibana Yigang. natural teeth 1. It is inserted into the recess 2.2a formed in the crown of the tooth la. In this case as well, a small plate 9 (indicated by dotted lines) may be used as a support to be placed on the toothless gums.

Figure 4 is also. Also shown is a container 14 containing the filling or restoring material. This instrument consists of two small strips 31 and 31a, which were originally flat.
Teeth 1, l when pulled by a retractor device to be described later
It is made of metal or plastic material that is large enough to partially enclose a! , fff body 31.31b is
The purpose is to delimit a recess 2.2a for each of the occlusal proximal surfaces of *ttta to prevent the filling material from flowing out when filling the recess. The band 31.31a has an opening 35.35a into which the end 3b of the metal rod 3 fits, corresponding to the recesses 2, 2a into which the ends 3b of the metal rod 3 fit.

The band is provided with a hole 32 formed in its side surface having a wide end 33 and a narrow end 34, and a narrow end 32 of a size such that it can slide within the narrow end 34 of the hole 32. A pin or head 36 having a shaft 37 at its end is inserted into the hole 32 using this wide end. Pin 36 and shaft m
37, in use a substantially perpendicular U-shaped attachment to the rod 3 is fixedly connected to the member 38a on both sides thereof.

These two opposing U-shaped attachments are provided with a mechanism having a male thread 39 and a female thread 40 between the members, and the male thread and the female thread mesh with each other as threads in opposite directions. For U-shaped installation, expand members 38 and 38a,
Therefore, the abutment tooth of the band 1. This allows strong access to la. As shown in FIG.
By fixing it on the upright side of the tooth, it becomes possible to easily fill the gap between the south of the two trees and the toothless gum with a suitable material. A hole 40a is formed in the female thread 40 so as to cross the female thread 40.
is formed so that the female screw itself can be manipulated, while the male screw 39 is attached to the U-shaped member 38.
It is fixed and integrated with 38a. In order to be able to manipulate the internal thread, it is advantageous to provide the end of the internal thread with a knurled or uneven collar 41 which can be operated manually, i.e. without the use of tools.

The storage device described above can be used, for example, as follows. After forming the recesses 2 and 2a of ra, fJt
The bands 31.31a are applied to each of the teeth 1.1 and 1a, and fixed by rotating the female screw 40.
Partially fill the lost south part between la using the metal members 3 or 7 and 7a, the small plate 6 if provided, and the M-type members 4 and 4a of type 1 if provided. do. During this procedure, the band 31.31a prevents the filling material from flowing out of the recess 2.2a. After removing the hardened filling material and finishing the prosthesis outside the mouth, this prosthesis is again placed in place and fixed to the tooth as already described. Fixation of the prosthesis Once this is completed, the bands 31, 31a are removed by cutting.

Two U-shaped fittings are attached to parts 38 and 38a.

A protrusion 42 may be provided on the side so that, for example, a template for preparing the recesses fi2, 2a can be positioned.

[Brief explanation of drawings]

FIG. 1 shows a first example of an instrument for making an artificial prosthesis according to the present invention.
FIG. 2 is a schematic diagram of an example. Figures 2 and 2a show a schematic representation of the three parts shown in Figure 1, fixed to two natural teeth and not covered with filling or restorative material, with one of the ends of the appliance inserted. It is a schematic diagram of a natural tooth. FIG. 3 shows another embodiment of the device according to the invention. FIG. 4 shows a further embodiment of the device according to the invention, which comprises a receiving device attached to a natural abutment. 1, la... abutment tooth, 2, 2a... recess, 3...
Metal rod patent applicant Gilmal Socheta a Lisbon Sabirita Limitata

Claims (1)

[Claims] 1) Both ends of the metal member (3, 7, 7a) are inserted into the pedestal portions (2, 2a) formed on the facing abutment teeth (1, 1a), and the metal member and The base of one or more artificial teeth is formed by placing a filling or restoring material in the gums of the missing tooth so as to be bonded, and the metal member thus treated is removed and another filling or restoring material is placed. finishing the artificial tooth at least roughly by applying a restorative material, reinserting the metal member into the pedestal and substantially securing it with a filling or restoring material (e.g., a composition or amalgam);
A method of making fixed artificial dental prostheses such as bridge dentures by using pedestals formed on opposing abutment teeth, in which the artificial teeth are finished at the installation site. 2) A patent claim characterized in that the base of the artificial tooth is formed on the mechanism (6) placed on the gum of the missing tooth, thereby protecting the gum of the missing tooth and preparing for the creation of an artificial tooth. The method described in item 1 of the scope. 3) Both ends (3b) extend below the gap between missing teeth and are attached to the pedestal portion (2, 2a) previously formed within the abutment tooth (1, 1a).
An instrument used for fixing a bridge denture, etc., characterized in that it consists of a metal member (3, 7, 7a) into which a denture can be inserted. 4) The metal member (3, 7, 7a) forms a surface adjacent to the tooth (natural tooth or artificial tooth) by means of transverse arcuate ends (4, 4a) having back-to-back concave surfaces. A device according to claim 3, characterized in that: 5) The appliance according to claim 3, characterized in that a restriction member (6) for protecting the tissue in the gap between missing teeth is provided on the gum side of the artificial tooth. 6) When the constraining member (6) is substantially deformable, it has the shape of a small plate, a crumpled eating plate, a disc or other suitable shape, and can be placed on the toothless gums; Device according to claim 5, characterized in that at least one projection (5) is fixed for combination with the metal element (3, 7, 7a). 7) A through hole (11) is provided in the metal member (3, 7, 7a).
), and/or a plurality of protruding teeth (12) capable of improving the adhesion of the restoring material.
Equipment described in section. 8) The instrument according to any one of claims 3 to 7, characterized in that the metal member (3, 7, 7a) is a small rod. 9) The small rod has one part ( 7, 7a
), and the threads of the columnar body and the threads of the female thread face each other so that the two parts forming the small rod can be expanded and approached. The device according to any one of items 3 to 8. 10) Two small bands (31, 31a) which can be attached to the base surface of the teeth (1, 1a) so as to cover at least a part thereof, each band having a U-shaped those fixed to the mounting members (38, 38a), and the U
Male and female threads (39, 40) provided on the shape mounting material
10. An instrument according to any one of claims 3 to 9, characterized in that it is a dental instrument containing a restoring material or a filling material, and a retractor mechanism consisting of a retractor mechanism. 11) Said band (31, 31a) is adapted to correspond to a tooth recess (2, 2a) that accommodates each end (3b) of the member (3, 7, 7a) supporting the prosthesis. Device according to claim 10, characterized in that it has a defined opening (35). 12) A patent characterized in that the male/female thread mechanism (39, 40) is preferably fixed to the upright side of the U-shaped attachment (38, 38a) so as not to interfere with the treatment operation. An instrument according to claim 10 or 11. 13) The belt body (31, 31a) is removably attached to the U-shaped attachment member (38, 38a), according to any one of claims 10 to 12. utensils. 14) The U-shaped attachment member (38, 38a) has a mechanism (36) that fits into a hole (32) provided on the side of the band (31, 31a). The device according to any one of Items 3 to 13. 15) The U-shaped attachment member (38, 38a) has a protrusion (42) on the side so that a template for forming the recess (2, 2a) can be placed thereon. The device according to any one of Items 1 to 14.